dont prevent page scrolling when swiping on embedded decks

js/utils/util.js

@@ -24,6 +24,18 @@ export const queryAll = ( el, selector ) => {
 
 }
 
+/**
+ * classList.toggle() with cross browser support
+ */
+export const toggleClass = ( el, className, value ) => {
+	if( value ) {
+		el.classList.add( className );
+	}
+	else {
+		el.classList.remove( className );
+	}
+}
+
 /**
  * Utility for deserializing a value.
  *